Some solution properties of polyacetals containing poly perfluoro (oxymethylene-ran-oxyethylene) macromers (PFPE acetals) were investigated. Of the eight fractions selected dynamic light scattering in 1,1,2 trichlorotrifluoroethane and intrinsic viscosity measurements in four solvents of different thermodynamic quality and polarity, including a theta solvent, were performed. Previous results on chain flexibility of the new polymers could be reanalyzed taking into account non-negligible solvent effects. The characteristic ratio of the new PFPE-acetals was confirmed to be slightly higher than that of the corresponding fully fluorinated polyethers.
Посилання на статтю:
On the unperturbed dimensions of perfluoropoly-(oxymethylene-co-oxyethylene)-acetals / M. Levi, S. Turri, A. Sanguineti // Polymer. – 1999. – N 40. – P. 4273–4278.